Water under sink but no leak

Hey everyone, really sorry if my topic is offtopic. 

Hey there,

I totally get your frustration – plumbing mysteries can be quite the head-scratchers! From your description, it sounds like you've done a thorough job checking the usual suspects. If you've ruled out leaks and the faucet itself, it's definitely possible that you're dealing with condensation.

Condensation can occur when warm, humid air comes into contact with a cold surface (like your sink pipes or the cabinet). The moisture in the air condenses into water droplets on the colder surface, leading to that pooling water you've noticed. To tackle this:

Insulation: Consider insulating the pipes under the sink with foam pipe insulation. This can help prevent the cold pipes from meeting the warm air, reducing the chance of condensation.

Ventilation: Make sure the area under your sink is properly ventilated. If the air can circulate, it might help reduce humidity and condensation.

Dehumidifier: If your kitchen tends to be quite humid, a small dehumidifier placed nearby could help regulate the moisture levels.